Happy 30th Birthday Kate Middleton! Here's a Look Back at Some of Her Best Outfits Ever, So Far

It's Duchess of Cambridge Kate Middleton's 30th birthday today—and to celebrate, let's take a look at some of the best outfits Kate has worn in her public life to date. Check out some of our picks—starting with what she and Prince William wore to their college graduation (!)—after the jump. What are some of your favorite Kate Middleton looks of all time?

Let's start waaaay back in the day—2005, on the day of Kate and Wills' graduation from St. Andrews in Scotland. Here they are looking sharp in crisp white shirts—before they put on their graduation gowns.

ST ANDEWS, SCOTLAND - JUNE 23: (NO SALES) In this Handout Image provided by Clarence House www.officialroyalwedding2011.org, Kate Middleton and Prince William on the day of their graduation ceremony at St Andrew's University in St Andrew's on June 23, 2005 in Scotland. (Photo by the Middleton Family/Clarence House via GettyImages)

She even looks cute in light blue tweed—a day at the races with the royals in 2006:

KLOSTERS, SWITZERLAND - MARCH 19: Prince William and girlfriend Kate Middleton use a T-bar drag lift whilst on a skiing holiday on March 19, 2008 in Klosters, Switzerland. (Photo by Indigo/Getty Images)

PHOTO: Getty Images

Kate Middleton has always been a fan of blue-and-white tailoring—a theme we've seen her repeat throughout the years. Here she is with Prince Harry in 2008:

WINDSOR, ENGLAND - JUNE 16: (NO PUBLICATION IN UK MEDIA FOR 28 DAYS) Prince Harry and Prince William's girlfriend Kate Middleton laugh together as they watch the Order of the Garter procession at Windsor Castle on June 16, 2008 in Windsor, England. (Photo by POOL/ Tim Graham Picture Library/Getty Images)

PHOTO: Tim Graham/Getty Images

But then again, blue seems to be her color. Here she is with William in 2010:

NORTHLEACH, UNITED KINGDOM - OCTOBER 23: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Kate Middleton and Prince William attend Harry Meade & Rosie Bradford's wedding at the Church of St. Peter and St. Paul on October 23, 2010 in Northleach near Cheltenham, England. (Photo by Indigo/Getty Images)

LONDON, ENGLAND - NOVEMBER 16: Prince William and Kate Middleton pose for photographs in the State Apartments of St James Palace on November 16, 2010 in London, England. After much speculation, Clarence House today announced the engagement of Prince William to Kate Middleton. The couple will get married in either the Spring or Summer of next year and continue to live in North Wales while Prince William works as an air sea rescue pilot for the RAF. The couple became engaged during a recent holiday in Kenya having been together for eight years. (Photo by Chris Jackson/Getty Images)

PHOTO: Getty Images

Here is the Duchess wearing Amanda Wakeley on two separate occasions—left, at a charity event last October, and right, visiting the Oak Centre for Children in September.

LONDON, ENGLAND - APRIL 29: Catherine Middleton waves to the crowds as her sister and Maid of Honour Pippa Middleton holds her dress next to her father Michael Middleton before walking in to the Abbey to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England. The marriage of the second in line to the British throne is to be led by the Archbishop of Canterbury and will be attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding. (Photo by Pascal Le Segretain/Getty Images) *** Local Caption *** Catherine Middleton;Pippa Middleton;Michael Middleton;

(FromL) Britain's Prince William, Catherine, Duchess of Cambridge and Prince Harry leave after they attended "A Night of Heros", the annual Sun Military Awards, to honour members of the British armed forces in London on December 19, 2011. AFP PHOTO/ WPA POOL/ ARTHUR EDWARDS (Photo credit should read ARTHUR EDWARDS/AFP/Getty Images)

Britain's Prince William, Duke of Cambridge (L), and his wife the Duchess of Cambridge, Kate (R) walk through Victoria Barracks in Windsor, west of London on June 25, 2011, to attend a medal parade for the 1st Battalion Irish Guards Regiment. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

PHOTO: AFP/Getty Images

The Duchess' love for High Street fashion is also well-documented. Here she is in Zara over the holidays (left) and the morning after her wedding (right):

LOS ANGELES, CA - JULY 09: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge arrive at the 2011 BAFTA Brits To Watch Event at the Belasco Theatre on July 9, 2011 in Los Angeles, California. The newlywed Duke and Duchess of Cambridge were in attendance on the ninth day of their first joint overseas tour visiting Canada and the United States. (Photo by Mark Large - Pool/Getty Images)

PHOTO: Getty Images

OK, I know I must have missed some key fashion moments in Kate Middleton's public life—as soon as I started researching this story, it became obvious the woman has worn so many amazing looks that it'd be impossible to tackle even a small percentage all in one post. What's been your favorite Kate Middleton fashion moment so far? Tell us in the comments.